Understanding window and glass terminology can help you communicate your needs more effectively when discussing repairs or replacements. Below is a glossary of common terms used in the glass industry to help you better understand your windows and their components.

Glass Types & Window Terms

• Single Pane – A single piece of glass in a frame. Cannot ‘fail’ or blow a seal, but can crack or break. Never found in a vinyl frame.
• Double Pane – Two pieces of glass vacuum-sealed together with a spacer bar in between. This unit (IGU – Insulated Glass Unit) functions as a single component and must be replaced entirely if the seal fails.
• Storm Window – An outer window attached outside of a primary window, usually found on single-pane windows and often made of aluminum. Occasionally installed on the inside.

Window Styles

• Picture Window – A large, fixed-pane window that does not open.
• Single Hung – A window where only one sash moves up and down.
• Double Hung – A window where both sashes can move up and down.
• XO/OX/Slider – A window that slides horizontally. ‘X’ denotes the sliding section, while ‘O’ denotes the fixed section. An XOX slider has two moving sections that slide toward the center.
• Casement Window – Hinged on one side and swings outward, similar to a door. Operated with a crank and may have issues locking or opening over time.
• Awning Window – Hinged at the top and swings outward from the bottom, allowing for ventilation while preventing rain entry.

Common Window Issues

• Failed Seal – A double-pane window that has lost its seal, leading to foggy, cloudy, or moisture buildup between panes. Sometimes referred to as a “leaking” window.
• Reglaze – Resealing glass into the frame. Customers may describe this issue as the glass “coming away from the frame” or having a “gap between the glass and frame.”
• Spring Balances – A mechanism that assists with lifting and holding a sliding window in place. If malfunctioning, customers may describe their window as “not opening or closing properly” or “off-frame.”
• Window Leaking – Water intrusion around the window frame or between the glass and frame. Some leaks can be fixed, but others may be related to siding or roofing issues, which may require a general contractor.

Window Components

• Snap Bead/Glazing Bead – The plastic, vinyl, or aluminum trim around the glass that holds it in place. Mostly cosmetic but may be described by customers as “the plastic trim falling off.”
• Putty – A sealant used to hold glass in place on wood or steel windows. Resembles concrete and requires specialized application. Reglazing putty windows typically takes about an hour per window.

By understanding these terms, you can better identify issues with your windows and communicate effectively with our team.

Need help with your windows? Joe's Glass Inc is here to assist with repairs, replacements, and upgrades!